CVE-2026-10521 PUBLISHED

Authenticated unintended access to critical program parameters

Assigner: CERTVDE
Reserved: 01.06.2026 Published: 23.06.2026 Updated: 23.06.2026

An high privileged remote attacker can access a hidden configuration method, that should not be accessible by any user, to modify critical program parameters. This can result in a total loss of confidentiality, integrity and availability.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	MB connect line
Product	mbCONNECT24
Versions	Default: unaffected affected from 0.0.0 to 2.20.2 (excl.)

Vendor	MB connect line
Product	mymbCONNECT24
Versions	Default: unaffected affected from 0.0.0 to 2.20.2 (excl.)

Vendor	MB connect line
Product	mbCONNECT24
Versions	Default: unaffected Version 2.20.1 is affected

Vendor	MB connect line
Product	mymbCONNECT24
Versions	Default: unaffected Version 2.20.1 is affected

References

https://www.certvde.com/en/advisories/VDE-2026-068/

Problem Types

CWE-425 Direct Request ('Forced Browsing') CWE